FIGURES. 1–8 in Light and ultrastructural analysis of Myxobolus insignis (Myxozoa), infecting the Amazonian Fish Semaprochilodus insignis (Prochilodontidae)

FIGURES. 1–8. Light and transmission electron micrographs of the myxosporean, Myxobolus insignis, from the fish Semaprochilodus insignis from Amazonian fauna. 1. Free mature spores observed in valvar view by LM-DIC optic. 2. Semi-thin section of free mature spore observed within the epithelial tissues of the gill (G). 3. Ultra-thin section of the internal region of a plasmodium showing one immature spore (iS) and two mature spores and correspondent polar capsule sections (PC). 4. Spore transversally sectioned at polar capsules (PC) level. 5. Spore transversally sectioned at sporoplasm (Sp) level (5) showing there typical structures, as the spore wall (W), shell valves (V) and suture lines (arrowheads). 6. Longitudinal ultrathin section of a polar capsule (PC), showing a dense matrix (*) surrounding the different transverse sections of the polar filament (arrowheads) and the complex apical region of the PC (arrows). Externally the wall (W) and the valves (V) are observed. 7. Ultrastructural detail of a lateral region of the spore showing the suture line (arrowhead), the valves (V) and the wall (W). 8. Ultrastructural detail of a transverse section of the shell wall (W), the valve (V) and the plasmalemma (double arrowhead) of the sporoplasm.